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Finding the Fourth Proportional to 71,602.12, 98,848.02 and 66,890.44

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Solution

The fourth proportional to 71,602.12, 98,848.02 and 66,890.44 is: 92,343.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,602.12 : 98,848.02 = 66,890.44 : x
  2. Step 2: Convert to fraction form
    71,602.12/98,848.02 = 66,890.44/x
  3. Step 3: Cross multiply
    71,602.12x = 98,848.02 × 66,890.44
  4. Step 4: Simplify right side
    71,602.12x = 6,611,987,550.93
  5. Step 5: Solve for x
    x = 6,611,987,550.93/71,602.12
  6. Step 6: Final answer
    x = 92,343.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.